We have the exact same issue and it seems that there is no way to get a refund. From Microsoft Store it looks like you can get refunds for your orders where you bought Minecoins, but not for the purchases that you used your minecoins on.
We have the exact same issue and it seems that there is no way to get a refund. From Microsoft Store it looks like you can get refunds for your orders where you bought Minecoins, but not for the purchases that you used your minecoins on.